Punching-machine.



E. J. BIRKETT.

PUNGHING MACHINE. v

APPLICATION FILED AUG. 5, 1911. 1,056,396 I Patented Mar.18,1913.

5 SHEETS-SHEET I.

m o nmam COLUMBIA PLANOGRAPH CO WASHINGTON D, c.

E. J. BIRKETT.

PUNGHING MACHINE.

APPLICATION FILED AUG. 5, 1911.

Patented Mar. 18, 1913.

5 SHEETSSHEET 2.

COLUMBIA PLmOmiAPH COnWASHINUTON, n. c.

5 SHEETS-SHEET 3.

E. J. BIRKETT;

PUNGHING MACHINE.

APPLICATION FILED AUG. 5, 1911. 1,056,396. Patented Mar. 18, 1913.

IIJ...

COLUMBIA FLANOGRAPH c0.. WASHINGTON, D. C-

E. J. BIRKETT.

PUNOHING- MACHINE APPLICATION FILED AUG. 5, 1911.

1,056,396, Patented Mar. 18, 1913.

5 SHEETS-SHEET 4.

films/52%]? J E 1 {WM/aq COLUMBIA PLANOGRAPH CQQWASHINGTON. D. c.

E. J. BIRKETT.

PUNGHING MACHINE APPLICATION FILED AUG. 5, 1911.

1,056,396, Patented Mar. 18, 1913.

5 SHEETS-SHEET 5.

mag

COLUMBIA PLANMRAPH C0., WASHINGTON. D. c.

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ED'WAB-D J. BIBKETT, OF EAOINE, VJISO'ONEIN, ASSIGNOR TO 5. I. CASE THRESHING MACHINE COIELLANY, OF REL-CINE, \VISCONSEN, A CORPDBATION.

PUNCHING-IEACEINE.

Specification of Letters Patent.

Application filed August 5, 1911.

Patented altar. 18, 1913.

Serial No. 642,524.

To cZZ 'zrhcm'z'tmc'y concern: is a plan view of the same with a portion Be it known that I, EDWARD J. BIRKETT, of the head structure broken away; Fig. 3 a citizen of the United States, and resident is a central longitudinal section of the same, of Racine, count-y of Racine, State of lVisparts, however, being shown in full, indecons n, have invented certain new and usependently of the section; 4 is a horiful Improvements in Punchingllachines, of zontal section of the same, taken on a plane which the following is a specification. indicated by the line l-l of Fig. 3; Fig. 5/

The present invention relates to punching is an end elevation of the same with a permachines generally, and more particularly tion shown in transverse vertical section to machines for punching and trimming upon a plane indicated by the line 55 of plates of metal, or like material. l; Fig. 6 is an elevation of a portion One object of the invention is to provide of the clutch mechanism employed in cona machine which will take in sheets of pling the parts together to enable the magreater dimensions than machines of the chine tocperate as a single punching unit, prior art, while maintaining the weight of parts being shown in section taken upon a the machine at a minimum. plane indicated by the line 6 6 of Fig. 7; Another object is to provide a machine Fig. 7 is a vertical section of said clutch which may be used as a single large punch- .mechanism, the section being taken on a ing un t, or as a plurality of smaller punch plane indicated by the line 77 of Fig. 6; ing units, thereby increasing its availability and Fig. 8 is a transverse horizontal section for service, and hence its efiiciency. one of the adjustable guides and asso- Another object is to provide a novel clated parts by which the movements of the rounterbalance for the table of the machine. table are controlled, the section being taken Other objects look to the provision of on a plane indicated by the line 8-8 of simple and efficient construction and ar g 5. rangcment and adjustment of parts, to- Throughout these views, like characters gether with case of operation and repair. refer to like parts.

in carrying out my invention, 1 prefer- Referring to the drawing in detail, 20 and ably arrange the fixed head of the machine 21 designate the side' frame members, and upon the upper portion of the frame which and the end frame members, which is relatively light; mount the movable table, are bolted together at their ends by bolts which cooperates with the head, upon the 24-, so as to provide a rectangular inclosure lower frame members, which are relatively in which the reater portion of the operathcavy; and locate the actuating mechanism. ing mechanism of the machine is located. for the table within the inclesure formed by Standards 25, 26, 28, 29, 30, 31 and 32 the lower frame members. I also preferably extend upward from the side frame memdivide the head and table into two sections hers 20 and 21 and are connected in pairs and arrange for independent adjustment of at their upper ends by bars 33, 3d, 35 and the head sections and independent,or united, 36. These standards constitute the supactuation of the table sections. Cooperatporting means for the head of the machine, lug cylinders and pistons below the table which is divided into two sections 37 and sections, supplied from a source of com- 38, while the lower frame members 20, 21, pressed air, constitute the counterbalance 22 and 23 constitute the supporting means for the table. for the cooperating table, which is similhese several objects and features of inlarly divided into sections 39, 40. Each, vention will be more ful y understood upon standard preferably consists of a rod threadreference to the following detailed descriped at its upper end and reduced in diameter tion taken in connection with the accompaat its lower end. As illustrated particunying drawing, which illustrates the prelarly in Fig. 5, the reduced portion of the ferrcd form of my invention, and the scope rod passes through an opening in a flanged 10 of the invention will be particularly pointed portion of the associated side member and out in the appended claims. is held in place by a nut, as 41 in the case In said drawings. Figure 1 is a side eleof rod 32, screwed upon its lower end. ration of a punching machine constructed The sections 37 and 38 of the head are in ilccOl'clflnci with 3' invention; similarly supported, each upon four of the 73, 74c and 75 are all of the same size. Consequently, all parts of either section of the table will be given the same vertical movement upon the movement of either associated shaft.

The entire machine is adapted to be driven from a pulley 77, keyed to a sleeve 78, loosely journaled upon the shaft 79, journaled in the bearings of the side frames 20 and 21. A gear-wheel S1 is, in turn, keyed to the sleeve 7 S. A countershaft S2 is located directly above the shaft 79 and is similarly journaled in bearings in the side frames. This shaft also extends beyond the side frame 20 and a gear-wheel 83 is keyed to this extended portion of it. The pinion S1 and the gear-wheel 83 mesh with each other. About midway of the side frames 20 and 21, the countershaft 82 has the pinion Set keyed to it; and directly beneath it, is the gear-wheel 85, mounted c osely upon the shaft 79. The pinion 8e and the gear-wheel 85 are also in mesh with each other. From this arrangement of pinions and gears, it therefore follows that motion will be transmitted from the pulley 77 to the gear-wheel S5 and that the latter will run at a much lower speed than the former. This proportion of speed, of course, may be varied, as desired. and because of this arrangement, it also follows that the gearwheel 85 will be constantly driven so long' as the pulley 77 is connected to a suitable driving source. It is from this wheel 85 tha the shafts 62 and 63 on the one hand, and 6 1 and 65 on the othe are driven. In the former case, this result is brought about through a gear-wheel 80, mounted loosely upon the shaft 79 and meshing with wheel 70; and in the latter case, through a gearwheel 87 keyed to the shaft 79 and meshing with gear-wheel 73. By clutching the pinion 86 to the constantly driven wheel 85, the section 39 of the table may be actuated; and by clutching the pinion S7 to the same wheel, the section 10 of the table may be actuated. On the other hand, the table sec tions may be actuated together, as a single unit, by connecting the pinions 86 and 87 to the shaft 79 so that they will operate in uni son; then, whichever gear-wheel S6 or 87 thrown into clutch with the wheel both will be actuated and both sections of the table will be moved as a unit.

The mechanism by which the pinion S0 is clutched to the shaft 79, so as to bring about this uniform and simultaneous movement of the table sections, is illustrated especially in Figs. 6 and 7. As explained, the gear-wheel S6 normally runs loose upon the shaft 79. It is maintained in its proper lateral position by means of the collar 88 secured to the shaft 79 by a et screw 89. The side of the gear-wheel 86 adjacent to the clutch member 90 is provided with segmental projections 91, which cooperate with the segmental projections 92 upon the member 90 to lock the wheel 86 to the member 90. The latter member is free to move longitu dinally upon the shaft 79, but cannot rotate upon said shaft by reason of the feather 98 seated in a groove in the shaft and cooperating with a groove in the member 90. In consequence of this construction, the movement of the clutch member 90 upon the shaft 79 will cause the gear-wheel 86 to rotate with the shaft 79, just as the gear-wheel 87 does by reason of its keyed connection to it. The desired movement of the clutch member 90 may be brought about in any preferred way. As here illustrated, the exterior of this member is provided with a groove 9% in which the shoes 95 of a yoke rest. This yoke is pivoted to a ring 96 secured to one end of the bearing of the shaft 82. The side members 97 of the yoke are rigidly held in position by an intervening spacing plate 98 and associated bolts 99. A link is connected at one end to one of the bolts 99 and extends through a suitable opening in the side frame 21, where it terminates in a handle. It will be apparent that when the link 100 is pushed inward, the gear-wheel 86 will be brought into mesh with the clutch member 90 and will, from that time on, be in position to rotate with it and the shaft 79. hen the link 100 is drawn outward, the g-earwheel S6 willv be free to continue its rotation independently of the shaft 9. The clutch member 90 may be held in either this engaging or non-enposition by means of a pin passed through the holes 101 or 102 in the link 100 and a cooperating hole in the adjacent rib of the side frame 21. When the link 100 is drawn outward, the pin will pass through the hole 101, as indicated by the sectioning of the pin in Fig. 7; and when the link 100 pushed inward, then the pin will be passed through the hole 102 in the link. In each of these instances, the pin will occupy the same hole, designated 103, in the rib of the side frame.

The mechanism, by which the constantly driven wheel 85 is thrown into and out of clutch with. the adjacent gear-wheels 86 and 87, may now be considered. These gearwheels are provided with projections 104 and 105, which extend over the hub 106 of the wheel 85. The projection 10d has a ring 107 keyed to its outer periphery, and projection has a similar ring 108 similarly positioned. Theinner faces of the rim of the wheel 86 are provided with ratchet teeth 109 on either side of the central web. These teeth, therefore, lie in the planes of the rings 107 and 108, respectively. Each ring 107 and 108 carries a spring-pressed dog. The dog carried by ring 107 is designated 110, and that carried by ring 108 is designated 111. s indicatedin the case of ring cent ed e of the member 115 and more it 109 the dog is pivoted di ectly to the ring about its pivot toward the shaft l -fh n and has its tree end spring-pressed by a in this poftion the bell crank lerer stop spring 112. act 9; between a lag 113 on the 129 free to engage the tail 128 and hold 5 ring one a t it i 1 L11 on the dog. l-Vhen unthe member 115 in its normal position. T he restrained. ie springs associated With the action of the pin 130 upon tie member 115 dogs jtorce ieni into enere .nent With the such as to bring its forward and i t a teeth 109 ot the Wheel o 5 and the a e position to engage the roller 11'? before the rotating in the direction of the arrow, 21S traii'l of gears has stopped its movement. shown in ilig. 3, ti'enem fi ltS lnOt ll The oncoming roller 11? is engaged by the through the dog to the ring or 108, as (jgi'ip jrgifilifi d f t 18 member 11; l the case may bin and thence to the corregradually mm th dog-111, o t of engage-- spondi' e ar-n'heel. St or Si, to CauSe e ment with the teeth 109,thereoy unclutchihg actuation or the associated. table section. th associated gear-Wheel 87. ihebcllcranl:

1" m e dogs are held out of altln gh lying in planes upon oppo- 8Q 1115i l'iCFlriOll 3)" lllOilllS O l. COlllZl'Ol 111C llJ-tl'S gil f the g nyhggl are nountgfl 115 and 116. These members are narrow i v on connnon frame which extends been the lined shafts 72 and 76. This l plates ot irregular shape Whi h extend edge swg W180 lDClLWCQl] the gear-Wheel and the frame is made up the members 132 and ee in the n 111 tame, and be een 1:35). bolted together by bolts Each is j w 1 v r V the gen axheel 83 and the wheel So in the ternr l h a rib 134.. which carries an up other. lilach dog); provided with roller 1,1 1 .li'. which. projects outward from. the wheel So into tilitf jjltlllt ot the associated control 25 member. per ends oil? the control members 116 are pire ed to castings 'ieotivcly. The former of l J rods 120 and 121. The spending rods thcr with $0519 @lllemilntends sligntl bevond the side 19 melllllfils fr; no member 21 Each is provided at its 611518 (131d enter end with a foot-lever 14o. The crank d to engage the adjacent shafti. (he case may be. to limit its 010- ti on in on direction. 1. coiled compression i between it and the adjacent eno n-ai'ne members :2 and 23, respecn 3 shaft 139 extends slightly beyond aine member 20. while the other portion 0 '10 end frame, norinallv holds lne cranli. against me snatt and the ll- -rer 1.111 t l position. The bellcrank a ts elevageo stops 129 also have nieir retnrn movements limited by conical pins 14-1 and 14 2 upon the members 182 and 133, respectively.

ion either toot-lever 1 10 is depr jsed the ociated bell crank stop is moved out of en ent tree tle associated control n niber The result is the clutching of the corresponding train 0. earing W'th the conis actnateth the stantl (lllYGH gear-wheel 85. followed by 50 c her will be free the r turn of the control member to its norto drop on the act, ravitY "l'fl inal position and the consequent unclulclr therein: allow the 41 il to ot' the train of g aring. The period -l or no i the train remains in clntch is sutlicient ni'wen'ie; thereln' clutch the correspondsure one complete rotation of the eccenwing to this constantly shatits o2 and G3, or 6 1 and as the V 11m iifl'nllfiii ot the case ma be. with a corresponthnp; rip-andll lotion o1 the associated table section.

r fiOOdGYQI? will result in one complete i in -and-doun increment of both sections of the table operating as a single unit.

in order to counterbalance the Weight of sit crn the table sections, each section has a piston 143 and cylinder 1% associated with it. The piston is secured to a piston-rod 145 extending downward from the center of the table section, and the cylinder is mounted directly upon the intermediate fixed shaft 72 in the one case, and 76 in the other. A suitable source of compressed air, or the equivalent, is arranged so as to supply compressed air to these cylinders beneath their pistons. In the present instance, a reservoir 1&6 is located on the top of the structure, resting directly upon the bars 33, 34, and 36 and being properly secured to them. Pipe connections extend from this reservoir to the cylinders 1&4. Pipes 1&7, 1-18, 1&9, 1.30 and 151 extend from the center of this reservoir 1&6 to one of these cylinders, and pipes 152, 153, 154., 155 and 156 from the center of the reservoir to the other cylinder. The reservoir may be supplied from any suitable source, and an opening 157 is shown for making a compressed air connection to the reservoir. By suitably regulating the pressure of the air, the weight of the table sections will be counterbalanced. The table sections 39 and 40 are provided with T-shaped grooves 158 similar to the grooves 42 in the head sections. These grooves are of the usual construction and are employed for holding the dies and punches, siears and other similar tools, in position for working upon the material.

From the above description, it will be apparent that the machine may be operated as a single punching unit by throwing the clutch member 90 into clutching position, in which event the operator may use either foot-lever 140, or it may be operated as two independ ent punching units. In the latter event, one operator stands at each end of the machine and each head and table section operates independently of the other. When thus used, each operator finds the foot-lever at his left and the adjusting hand-wheel at his right.

in carrying out my invention, it will be apparent that certain alterations and modifications may be made without departing from its spirit. I, therefore, do not wish to be limited to the exact matter illustrated, but aim to cover all such alterations and modifications by the terms of the appended claims.

lVhat I claim as new and desire to secure by Letters Patent of the United States is l. A punching machine comprising con nected side frames, a head secured to the upper portion of said side frames and having a working face on its under side, a movable table mounted between and guided upon said side frames beneath said head, and having a cooperating working face on its upper side, operating shafts journaled in said side frames below said table, connections between said shafts and said table for raising and lowering said table to and from said head, a

drive shaft jcurnaled in said side frames below said head, gearing connecting said drive shaft and said operating shafts, operator controlled mechanism for connecting said gearing to said drive shaft and means for automatically throwing said gearing out of operation at the end of the lowering movement of said table, substantially as described.

2. A punching machine comprising lower connected side frames, corner standards fixed to and extending upwardly from said side frames, a rectangular head mounted at its corners upon said standards, a movable table guided between said side frames beneath said head, mechanism mounted in said side frames beneath said table for raising and lowering the same to and from said head, and a common adjusting mechanism cooperating with each of said standards for adjusting said head vertically thereon, substantially as described.

3. A punching machine comprising lower frame members, a plurality of standards fixed to and extending upwardly from said members, a head mounted on said standards, adjusting devices connected to said head and engaging and cooperating with said standards, gearing carried by said head for simultaneously operating said adjusting devices, a movable table mounted upon said lower frame members beneath said head and means for raising and lowering said table to and from said head, substantially as described.

l. A punching machine comprising lower frame members, a plurality of standards fixed to and extending upward from said members, a head mounted upon said standards, a movable table mounted upon said lower frame members, means for moving said table toward and from said head, an adjusting device cooperating with each standard for moving the adjacent portion of the head relative to it, and common driving means for said several adjusting devices nounted on said head to insure a uniform adjustment of said head relative to said standards.

5. A punching machine comprising lower frame members, a plurality of threaded rods fixed to and extending upward from said members, a head, pinion actuated nuts threaded upon said rods and journaled in adjacent portions of said head, a movable table mounted upon said lower frame members, means for moving said table toward and from said head, a gear-wheel mounted on said head and meshing with said several pinions, and a hand-wheel for operating said gear-wheel to adjust said head upon said rods.

6. A punching machine comprising lower connected side frames, corner standards fixed to and extcmling upwardly from said side frames, a rectangular head mounted at its corners on id staiulards, pinion actuated nuts threaded on said lined standards and juurnaled in adjacent portions of said haul, a gear mounted upon the upper face of said head on a vertical axis centrally located with respect to said standards, said gear meshing with all of said pinions, a worm and hand wheel for adjusting said gear, a lllOVilblO table n canted between said lovver frame members beneath said head and mechanism for raising and lowering said table to and from said head, substantially as described.

T. A. punching uachinc comprising relatively movable members, one of said meinbers being divided into sections, and power driven mechanism operating said sections together as a unit and also separately and independently as a plurality of units.

5: r punching machine comprising a head, a relatively movable table divided into sections, and power driven mechanism for operating said sections together as a unit and also separately and independently as a plurality of units.

9. Br nunzhing machine comprising a frame, a head secured to the upper portion of said frame and having working face on its under side, a relative y movable table mounted in said frame beneath said head and divided into Lions having working faces on their upper side-s, l v

ano ower driven mechanism for reciprocating said sections together as a unit and also separately and independentl as a plin'ality of units.

10. punching machine comprising a frame, a head secured thereto, a relatively movable table mounted in said frame and divided into sections, a drive shaft, separate mechanisms for connecting said drive shaft to said table sections, separate clutches for throwing said mechanisms into operation, and means for connecting said mechanisms for operating said sections as a unit.

11. A punching machine comprising a frame, a head secured thereto, a table movable to and from said head and comprising separate sections, separate operating mechanisms for said sections, a drive shaft, separate clutches for connecting said drive shaft to said sections, means for automatically disengaging said clutches after a predetermined movement of said sections and a independent mechanisms for recipid mechanisms together and throwd out of gear with said l3. punching machine compri 1g relafinely movable head and table members, each d vided ino sections, means for rcciprocat l inn the sections of one member together as a Jinn ano, a9; separately and. independently as a plural cl: units, and means for separately and independently adjusting the sections of the other member relative to the first.

let. A punching machine comprising a frame, a head secured to the upper portion of said frame and having a working face on its under side, a relatively movable table mutated in said frame beneath said head and having a worlui g face on its upper side, said heal and table being divided into cooperating sections, means for reciprocating he table sections together as a unit and also so iarately and independently as a plurality of units, and means for separately and ineiendently adjusting the head sections relalive to said table.

15. ii punching machine comprising a frame, a vertically movable table mounted on said frame, power operated mechanism for raising and lowering said table, a cooperatinc cylinder and piston acting between said frame and table, and a compressed air supply and connections for supplying air to said cylinder to counterbal ance said table.

162i punching machine comprising a frame, a head mounted upon the upper portion of said frame and having a working face on its under side, a vertically yable cooperating table mounted on said frame beneath said head and having a working face on its upper side, power operated mechanism for raising and lowering said table to and from said head, downwardly ere tending pistons secured to said table, cooperating cylinders mounted upon said frame, a compressed air supply tank mounted upon said frame, and supply connections from said tank to said cylinders, whereby the air pressure counterbalances the weight of the table.

17. 1 punching machine comprising connected side frames, corner standards fixed to and extending upwardly from said side frames, a rectangular head mounted at its corners upon said standards, adjusting mechanism mounted on said head cooperatii with each of said standards for vertically adjusting said head, a table vertically guided between said side frames below said head, a pair. of operating shafts journaled in said side frames beneath said table, op-

n ill erating rods connected to the under face of said table adjacent the corners thereof, cranks on said operating shaft engaging the lower ends of said rods, a common drive shaft journaled in said side frames, gearing connecting said drive shaft and said operating shafts, and an automatically disengaged clutch for throwing said gearing into and out of operation.

18. A punching machine comprising connected side frames, standards fixed to said side frames and extending upwardly therefrom, a head comprising separate sections adjustably mounted on said standards, a table comprising separate sections vertically guided between said side frames, separate operating mechanisms beneath and connected to the sections of said table, a common drive shaft, independent clutch mechanisms for connecting said common drive shaft to the separate operating mechanisms of said table sect-ions and a clutch for connecting said separate mechanisms to compel the simultaneous operation thereof.

19. A punching machine comprising a frame, relatively movable head and table members mounted on said frame, power driven mechanism for reciprocating one of said members, and means for adjusting the other of said members comprising a pluralit-y of screw threaded rods fixed to said frame, whereon said adjusting member is mounted, pinion actuated nuts threaded on said rods and journaled in adjacent portions of said adjusted member and a common gear mechanism mounted on said adjusted member for rotating said pinions.

20. A punching machine comprising a frame, relatively movable head and table members mounted on said frame, one of said members being divided into sections, a common drive shaft, separate mechanisms for connecting said drive shaft to said sections, separate clutches for throwing said mechanisms into operation, and-means for connecting said mechanisms for operating said sections as a unit.

21. A punching machine comprising a frame, relatively movable head and table sections mounted on said frame and both divided into sections, mechanisms for separately adjusting the sections of one of said members, separate operating mechanisms for the sections of the other of said members, a common drive shaft, independent clutch mechanisms for connecting said common drive shaft to said separate operating mechanisms, and a clutch for connecting said separate mechanisms to compel the simultaneous operations of said sections as a unit.

EDWARD J. BIRKETT. Witnesses Gnonen F. Frsrrnn, KATHARINE Gnnriiorr.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

